JSWolf, about a year ago I did it via the Philadelphia library, on my Kindle Keyboard, in conjunction with a similar discussion thread, just to prove I could. But it's not an experience I'd want to repeat

Response time is slow. And you have to have Javascript enabled/disabled at the right point. And fonts at some points are too small or low contrast. But you could do it.

Now, Overdrive is in the process of switching over to a new user interface. Whether that will make it harder or (less likely) easier, I don't know, and am not in the mood to experimentally determine.

Hacking the Kindle (I consider fooling around with Javascript a hack) doesn't actually count. So the T1/T2 are the only Readers able to do this without a hack.

The new user interface is still the same as far as Kindle eBooks go. You have to go to Amazon to get the eBook as it is Amazon's server serving it.